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Begin documenting the limitations of some popular disk partitioning

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schemes.  In particular document the practical 2TB limit of bsdlabels.

Reviewed by:	simon
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Brooks Davis 2004-09-14 00:20:32 +00:00
parent bd02bff965
commit d3b7df9511
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=22337
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en_US.ISO8859-1/books/handbook/disks/chapter.sgml
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@ -202,6 +202,16 @@
case, the drive will be added simply as
<filename>/dev/da1e</filename>.</para>
<para>Due to the use of 32-bit integers to store the number of sectors
&man.bsdlabel.8; (called &man.disklabel.8; in &os;&nbsp;4.X) is
limited to 2^32-1 sectors per disk or 2TB in most cases. The
&man.fdisk.8; format allows a starting sector of no more than
2^32-1 and a length of no more than 2^32-1, limiting partitions to
2TB and disks to 4TB in most cases. The &man.sunlabel.8; format
is limited to 2^32-1 sectors per partition and 8 partitions for
a total of 16TB. For larger disks, &man.gpt.8; partitions may be
used.</para>
<sect2>
<title>Using &man.sysinstall.8;</title>
<indexterm>